Controller for instrument for measuring root canal length



FIG. 1 is a front elevation of a controller for instrument for measuring root canal length showing my new design;

FIG. 2 is a rear elevation thereof;

FIG. 3 is a right side elevation thereof;

FIG. 4 is a left side elevation thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a cross-sectional view thereof taken along line A—A in FIG. 1 with portions of the interior structure being omitted for ease of illustration;

FIG. 8 is another front elevation thereof showing the screen area in an operational condition;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a front perspective thereof. 

The ornamental design for a controller for instrument for measuring root canal length, as shown and described. 